Grunt: Update to latest grunt-compare-size plugin

Author: jzaefferer

package.json

@@ -28,7 +28,7 @@
   "devDependencies": {
     "grunt": "0.3.9",
     "grunt-css": "0.1.1",
-    "grunt-compare-size": "0.1.1",
+    "grunt-compare-size": "0.1.4",
     "grunt-html": "0.1.1",
     "request": "2.9.153",
     "rimraf": "2.0.1"